Condensed Matter Physics Seminar

2 p.m., Thursday, October 2, 2003
Room 1201, Physics Building

 The Hot Spots and Transition from d-Wave to Another Pairing Symmetry in

the Electron-Doped Cuprate Superconductors

Victor M. Yakovenko

(University of Maryland)

Abstract:  We present a simple theoretical scenario for a transition from d-wave to another superconducting pairing observed in the electron-doped cuprates. The d-wave pairing potential Delta, which has the maximal magnitude and opposite signs at the hot spots on the Fermi surface, becomes suppressed with the increase of electron doping, because the hot spots approach the Brillouin zone diagonals, where Delta vanishes. Then, the d-wave pairing is replaced by either singlet s-wave or triplet p-wave pairing. We argue in favor of the latter and propose experiments to uncover it.

Reference: V. A. Khodel, V. M. Yakovenko, M. V. Zverev, and Haeyong Kang, cond-mat/0307454

Host:  Fuhrer
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